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Dose in relation to volume: OARs
a
b
Figure: Dose constraints for the proximal bronchial tree
a) The general dose constraint for the whole structure “proxBT” (green) is 44Gy (<0.5cc) in 8
fractions. For PTVs near or abutting the main bronchus (b) a subvolume “Bronch adjacent”
has to be generated (red). The dose constraint for this volume (<0.5cc) is 60Gy/8fractions,
while the constraint for the rest of the “proxBT” (green) remains 44Gy/8fractions.